Air Canada 777 – Decreasing Fuel Quantity

An Air Canada Boeing 777-300, registration C-FNNU was performing flight AC-890 from Toronto, ON (Canada) to Rome Fiumicino (Italy) with 465 people on board. They were en route at FL330 about 40nm north of Prince Edward Island, PE (Canada) when the crew noticed the fuel quantity of the center fuel tank was decreasing. The crew transferred the remaining fuel from the center tank to the wings and decided to return to Toronto as a precaution. The crew did not request priority however requested emergency services on standby for the landing. The aircraft landed safely on Toronto’s runway 15L about 105 minutes later.

The Canadian TSB reported maitenance identified the left center fuel discharge check valve as faulty and replaced the unit.


Image © Wikimedia

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Jake Smith
Jake Smith
Director of Special Projects - Jake is an experienced aviation journalist and strategic leader, regularly contributing to the commercial aviation section of Travel Radar alongside leading strategy and innovation including livestreaming and our store.


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